PRECIPITATING AGENT FOR WASTEWATER TREATMENT AND PREPARING METHOD FOR ABOVE PRECIPITATING AGENT

摘要

PURPOSE: precipitating reagent prepares chitosan concentration water solube powder for the form of wastewater treatment and can semi-permanently store, without the use of the limitation of period. CONSTITUTION: preparing precipitating reagent for wastewater treatment method includes: 1 weight of mixing. Weak acid and 1-3 weight %. % chitosans are in the water as solvent; It stirs the mixture for dissolution chitosan; Freeze-drying obtains liquid precipitate agent from whipping step; The precipitating agent predetermined size of comminuted solids, wherein 0.1-10 weight. % weak acid and 1-50 weight. The water of % chitosans mixing.